Date: Tue, 13 Aug 2013 13:43:06 -0400 From: Aryeh Friedman <aryeh.friedman@gmail.com> To: Peter Grehan <grehan@freebsd.org> Cc: freebsd-virtualization@freebsd.org Subject: Re: ot: who to report a bug in if_tap to? Message-ID: <CAGBxaXnR%2BwTcB=vK95TmVhbmDMwDc%2BU6Vv0JWMWTLBH0yX%2Bs4w@mail.gmail.com> In-Reply-To: <520A6A9C.7090209@freebsd.org> References: <CAGBxaXk0_%2BN711Zu5k0bY=AB3iYmJb4C0_zK5PgGKbfpPR-t3g@mail.gmail.com> <520A6A9C.7090209@freebsd.org>
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It is connected to the physical nic via a switch (no intermediate routers). DHCP doesn't even attempt because there is no carrier on tap0: em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> ether 30:85:a9:ec:24:95 inet 10.0.10.10 netmask 0xffffff00 broadcast 10.0.10.255 inet6 fe80::3285:a9ff:feec:2495%em0 prefixlen 64 scopeid 0x1 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active re0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE> ether 90:f6:52:00:40:e6 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <half-duplex>) status: no carrier lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6> inet 127.0.0.1 netmask 0xff000000 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> tap0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=80000<LINKSTATE> ether 00:bd:0c:6e:02:00 inet6 fe80::2bd:cff:fe6e:200%tap0 prefixlen 64 scopeid 0x4 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect status: no carrier root@petitecloud:/home/aryeh # if if ifconfig ifmcstat root@petitecloud:/home/aryeh # ifconfig bridge0 create root@petitecloud:/home/aryeh # ifconfig bridge0 addm em0 addm tap0 root@petitecloud:/home/aryeh # ifconfig tap0 10.0.10.3 root@petitecloud:/home/aryeh # ifconfig -a em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=42098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWTSO> ether 30:85:a9:ec:24:95 inet 10.0.10.10 netmask 0xffffff00 broadcast 10.0.10.255 inet6 fe80::3285:a9ff:feec:2495%em0 prefixlen 64 scopeid 0x1 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=80000<LINKSTATE> ether 00:bd:0c:6e:02:00 inet6 fe80::2bd:cff:fe6e:200%tap0 prefixlen 64 scopeid 0x4 inet 10.0.10.3 netmask 0xff000000 broadcast 10.255.255.255 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect status: no carrier bridge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 ether f6:3c:f0:0f:b9:48 nd6 options=1<PERFORMNUD> id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 0 ifcost 0 port 0 member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 4 priority 128 path cost 2000000 member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 1 priority 128 path cost 200000 root@vcloud:/home/aryeh # dhclient tap0 tap0: no link .............. giving up On Tue, Aug 13, 2013 at 1:19 PM, Peter Grehan <grehan@freebsd.org> wrote: > Hi Aryeh, > > >> It appears that a bridged if_tap does not understand DHCP on the >> physical NIC... who do I report this to? > > > First, what's your configuration ? Is the DHCP server connected via the > physical NIC ? What does a tcpdump show ? > > later, > > Peter. >
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